<html>
    <head>
        <title>Twitter-Test</title>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    </head>
    <body>
        <h1>Twitter-Test</h1>
        <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
            <input name="username" value="<?php echo $_POST['username']; ?>" />
            <input type="submit" />
        </form>
        <p>
<?php

if (!empty ($_POST['username'])) {
    $json = file_get_contents ("http://twitter.com/friends/ids/" . $_POST['username'] . ".json");
    $friends = json_decode ($json);
    
    $json = file_get_contents ("http://twitter.com/followers/ids/" . $_POST['username'] . ".json");
    $followers = json_decode ($json);
    
    $nofollowers = array_diff ($friends, $followers);

    if (!empty ($nofollowers)) {
        foreach ($nofollowers as $id) {
            $json = file_get_contents ("http://twitter.com/users/show/" . $id . ".json");
            $user = json_decode ($json);

?>
            <a target="_new" href="http://twitter.com/<?php echo $user->screen_name; ?>"><?php echo $user->name; ?></a><br/>
<?php

        }
    }
}

?>
        </p>
    </body>
</html>
